Demountable-rim tool



Dec. 13, 1927.

1,652,161 w, N. BooTH DENUNTABLE 11111 'ron Filed April a9. 1922 2 sheets-sheet 1 W. BCOTH DEMOUNTABLE Rm TOOL um` 13SA 19257.

Filed April 2S. 1922v 2 Sheets-Shut 2 Patented YDec. 13, 17927.v

UNITED STATES:

WILLIAM N. nourri, oF 'innrnorig Mioipiraaiv.'

DEivIoU'NTAB'LE-Riivi Toot.

vAppiiation inea Apen 2e, i922. seriai` No. 557,323.

j ."The invention relates to devices for use in contracting and expanding rims particularly Y of the demountable type, andit has for kone.. of. its objects, the provision Oia simple demeans engageable with the. riin for limiting the rotation ofthe yokes relativ-e to V the rim ends. A further object is the Vproyision oi l means-upon one of the yolres for guiding the rim ends with respecttoy eachother during theirqzrelative movements.4 Other objects of the -invention reside in the novel features of construction and combinations-and arrangements of partsas more fully hereinafter set forth. l f In the drawings: f i., VFigure 1 is a plan view Ote-portion of a demountable rim with the tool applied, for contracting and'expandingltherim, thisv tool being shown partly insection;l Figurer2 is a side elevatioiitliereo'f; .Q Figures 3 .and'4za`re longitudinalsections therethrough adjusted positioni-i;Vv 'Y Figure 5 is Dal cross section 5-5'of Figure 4; 1 i

Figure 6 is a plan View of a portion oa modified demount'able rim with a modified tool vapplied and shown partly4 in section;

Figure 7 is a sectionallsideelevation thererso p. Y, Y

on the line of; e y i Figure. 8 is a similar view showing w the rim in a partially. contracted position-with the .tool in adjusted position for eiecting the riin adjustment;

Figure 9 is a cross. ysection on the liney 19-9 ofFigurerS. n I

i The demountable rim is transversely lsplit at 1 to form the two abutting ends 2 and 3 to' which are secured cooperating l.plates 4 A and 5 respectively. Theplate 5 Vslightly overlaps the baseV of the riinend 2fand has theH recess 6 engaged'inby the tongue 7 upon the plate 4,'.this tongue slightly ,overlapping the base lot-he rim end 3;

8-and 9 are cooperating'yokes. of the rim tool, Which respectively. enibracethe rim ends 2 and Sanda're secured thereto by means Voi.

the fixed pins 10 at oneof their'ends, Aaiid Athe slidable pins 11 at .the'other of their ends,

d E gage the 'baseof the riin.end3.- Y howingthe'parts in i erent these pins :engaging in transversely *alignedy apertures in the side flanges of Vthe rim.

The4 slidable pinsll have Vheads 12iat- 'their' outer ends .for facilitating; their adjustment the yokes 8 and 9. j 14 is 'ja vrod havingriglit and left threaded ends andanintermediate enlargement 15 through .which slidably extends a transverse rod 15:"1l This rod thread- 4 edlyextendsr through the cylindrical nuts 16 PArENr oFFiCav into and out of the apertures iii the rim, and Y *the outer endsgo `these vpins are protected by means of extensions 13 upon theeiids of journalled inthe bifurcations vTLT-'extending outwardly froin'the bases ot the yokes 8 and 95 and this threaded rod also preferably has the enlargements- 18` at its ends for prevent" ing disengagement frointhe cylindriealnuts.

The yoke 8 has the diveiging lugs 19 and 2O extending inwardly toward the rim end y 2 and adapted to alternatively engage its base, these lugs beingv adapted to limit the rotation ofthe, yoke S-aboutits pins l() and 11 and relative to the riin end 2. lThe yol're 9 has therdiverging lugs 21 yand 22 extending inwardly toward the rim, the lug 2l being adaptedto engage they plate 4 upon `the `rini end: 2, and kthe lug 22 being adapted iirst rotating...thetlireaded member. -14 toY Inove the yokes 8 and 9 away from each other, bringing the lug 19 of the yoke 8 and with the rim to limitV the relative rotation of the yokes and'rim, 'The rotationfof tliethreaded meinberis continued to 'separatetlie ends of theriin a suiiicient distance to permit the spacingvplate 23slidably engaging inthe aperture 2450i the lug 21 to engage between theco'operating edges of the platesto fen-V thelug 22 of the yoke -9 into engagement Y.

i4, and.' This spacing platehas enlargedv ends to prevent its becoming disengaged from the lug carryingthe saine.Y .Rotation of thethreaded yinembei14, then in' the -opposi-te directioin/moves ythe yokes VSand 9 lill) toward eachother to bring their'lugs 20 and l '21 re'spectivelv into engagement vwith lthe rim, thereby limiting the relative rotation of the yoles and rim; 'Upon'crontinued rotatioiiof this threaded ineinberQrthe" rim end 3 is moved radially inward relative tofthe rim end 2, the spacing plate 23'liolding `the (ends of the rim separated suiiiciently so that the plates jupon either rim lend do notY over-V lap thc other rim end. This inward radial movement of the rim end 3 is accomplished by the yoke 9 tulcruming about theend of the lug 21. moved radially inward a sutlieient distance, it will then slide over the innerface ol the rim end Q and overlap the same, the diameter of the rim being contracted the desired amount to readily remove or apply a tire. Rotation oi the threaded member 1-l in the opposite `direction then through the yokes 8 and 9, expands the rim to bring its ends into `re-engagement with each other, after which the tire tool may be removed by iirst disengaging the slidable pins 'l1 :from the rim and afterwards disengaging the fixed pins 10 therefrom. p

Another important feature ot my invention resides in maintaininf.;r the side flanges of the rim ends t2 and 3 in alignment and preventing lateral movement oit one rim end relative to the other during their relative adial movements. Specifically, I have provided the parallel lugs upon the ends ot the yoke 9 and engageable with` the side flanges of the rim end 2.

In the modified construction shown in Figures (i, '7, 8 and 9, the demountable rim 26 transversely split at 27 has the hinge members 2S and 29, the main bodies of which are secured to the bases ot' the rim ends 30 and 81 respectively by suitable means such as the rivets 32, the barrels of these hinge members registering and being adaptcditor engagement in by a pin `33. y i

The rim tool for contracting and expanding this type of rim is of the saine general construction as that shown in Figures 1 to 5 inclusive with the exception that the plate for holding the ends of the rim spaced is omitted, and also With the exception that the fulerum lug 3i upon the yoke 35 adja cent to the split in the rim and secured to the rim end 31 is curved to extend over the barrels of the hinge members to provide clearance therefor at all times. The end ot this fulcrum lug is recessed to engage over one of the rivet heads 32 securing the main body of the hinge. memberQS to the rim end 30. In operation, with this tool, the threadh ed member between the yokes is rotated to adjust the yokes toward eachother, thereby moving the rim end 3l radiallyinivard relative to the rim endtl() using the lug as a fulcrum After the rim has been contracted sufficiently to permit of removing and applying a tire, the threaded member is then rotated in a reverse direction to again bring the rim ends into engagement with each other, andto permit of riz-engagement, with the pin 33m the barrels of the hinge members.y

TVhat I claim as my invention is:

`l. A rim tool comprising a` member secured to one end of the rim, a member eon After the rim end 3 `has been nected to the other end of the rim and having a fulcrum lng rigid therewith and adapted to engage the iirst-mentioned end ot the rim, means :tor moving said members to iard each other,and cooperating means on saidi'im and member ior positioning said second member, whereby said tulcrum lug will engage the tirst-mentioned ond ot the rim. i i i' A rim tool comprising a yoke secured to one end oi the rim, a yoke pivotally con net-ted to the other end of the rimand hav-` ing itulcri'un lug extending inwardly from its base and adaptedto. engage the "firsts mentioned end oi" the rim and cooperating means on said rim and second ,volte i'or mountingsaid second yoke whereby said tulcrum lug may engage `the tirst-iiientioned end ot said rim and means 'for moving said )Jolees toward each other to bring said `fulcruin lug into engagcmentwvith the tirstmentioned end oi the rim and to contract the rim. i

S. A rim tool comprising members secured to the ends of a rim and movable toward each other, of tixedl means upon one oit said members, andcooperating means on said rim` and member for mountingsaid member whereby said fixed means is engageable with the other end of the rim for radially moving the ends of the rim relative to each other, when said members are moved toward each other.` i i et. A, rim tool comprisiiw members secured to the ends of a rim and movabletoivard each other, ot iixed means upononeofsaid members engageable with the other end oit the rim for radially moving the ends ot the rim relative to each other, and means tor guiding the ends ot the rim during Vtheir relative radial movements, i

5. A tool for a transversely split rim comprising a yoke secured to one oi.' tnerim ends, a secoml yoke secured to the other ot the rim ends, a itulcrum lug rigidlycarried by said second yoke and engageable with the Inst-mentioned rim end, and` a `lug upon one ot said voltea engageable `with the other rim end :tor guiding the sanieduring the relative radial movements of the rim ends. i i, i t3. AA tool .tor a transversely split rim com# `prising a volte secured to one of the rim ends, a second yoke pivotally secured to the other rim ends,y a ulcrum lug `rigidly mounted upon said second volte engageable with the firstaneiitioned rim end, substantially parallel lugs upon said secondyolre ino engageable With the sides oit the first-mem i tioned rim end for guiding the rim ends `with respect to eac-h other during their` rela--V tive radial movementsf i y 7. In a rim tool for a transversely split rim having overlapping positioning` plates at its ends, the combination Withmembers secured to therim ends, of means for mov-J `ing said members toward and away from each other, means upon'one of said members for holding the positioning plates spaced to be out of overlapping position, and means upon one of. said members orradially moving the rim ends relative to leach other while the positioning plates a-re held spaced.

8. In a tool for a transversely split rim Vhaving overlapping positioning plates, the

overlapping positiomand means for movingKY said yokes 'toward and away from each other. Y

9. Inl a'rim'tool, comprising a yoke embracing a rim end, means for pivotally securingsaid yoke to the rim end, diverging lugs uponsaid yoke extending inwardly to Ward and engageable with the rim kendsto limit the rotation of said yoke relative to the rimend, a second yoke embracingrthe other rim end, meansy for pivotally connecting said'se'cond yoke to the other rim end,

dverging lugs upon said second yoke eX- ltending inwardly toward the rim, oneV of said lugs-being engageable with the lirst` mentioned rim end and the other of said lugs being engageablewith the *last-men tioned rim end, and means for moving said Y yokes toward and away from each other;

andmeans on said rim forpositioning said second yoke so that its last-mentioned lug Will'engage the last-mentionedA rim end. Y In testimony whereof I aiX my signature.

WILLIAM N. BOOTH. 

